Coffee making machine



July 7, 1931. A. L. BAusMAN 1,813,872

l COFFEE MAKING MACHINE n Filed April 18. 1929 .7 Sheets-Sheet' 1 IN VENTOR.

Zyl/Mk, fa/ ATTORNEYS.

Jul); 7, 1931- A. L.. BAUsMAN v `1,813,872

coEEEE MAKING MACHINE Filed Abril 18'. 1929 f 7 :mets-sheet `:a

* f7/ V ATTORNEYS.

July 7, 19`1. MBAUSMAN 1,813,872

COFFEE MAKING MACHINE Filed April 18, 1929 I '7 Sheets-Sheet 3 j fw/pw/7/ f/f/ L' //j j? INVENTOR.

BY I

A; L. BAUsMAN coEFEE MAKING MACHINE l Filed April 18, 1929 /ff /f/ I`97| INVENTon #7401, ATTORNEYS.

July 7, 1931.

July 7, 1931. A. L. BAusMAN 1,813,872 l COFFEE MAKING MACHINEAFi1'ed`Apri1 18, 1929 7 sheets-sheet 6 ATTORNEYS.

July'7, 1931. A.,| BAUsMAN COFFEE MAKING MACHINE Filed April 18, 1929 '7sheets-sheet 7 IN VEN TOR. Z/w

' 9L ful,

A T TORNEYS.

I Patented July 7, 1931 omiso s'ranias 1 Lonzo LnamoN aanslaan, or`an,muyerrnnn, Massacnnsm'ra comme Maxine insomma Application le April18,

Vthe coffee supply, whtn the machine is i11-A operation, is large butlwhen the machine is at rest, the supply of made coffee stored fordelivery `is small. This feature is desirable in a machine for use inrestaurants where, during certain periods of the day, there is a largedemand for coffee and, during other periodsof the day, there is a smalldemand. The coilee will be in better condition if it isl` freshly made,according to the demand. The normal use of my machine will supplyfreshly made collec in either large or small quantities, according tothe demand. .The above, and various other features of the invention, bymeans of which it is particularly useful and adapted for the statedpurpose and other purposes .incidental to coffee making machines, willbe apparent from the following description and will be pointed out inthe appended claims.

The invention will be disclosed with reference to the accompanyingdrawings, in which Fig. 1 is a front elevational view of a coffee makingmachine embodying my invention; y l

Fig. 2'is a small scale plan view thereof;

Fig. 3 is a sectional elevational'view of one of the coil'ee cu s;

Fig. 4 is a si e-elevational view illustrative of the mounting of thecoiee cups on their conveyer;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 4;

Fig. 6-is a sectional plan view taken on the line 6-6 of Fig. 1;

Fig. 7 is a sectional elevational view taken 5 on the line 7-7 ofFig`.6;

. 9--9 of Fig. 7

2, 1928, under Serial'No.L

' (Fig. 7) is close 1929. Serial No. 356,141.

' Fig. 8 is a Vfragmentary view, takenlsimilarly to Fig. 7 andillustrative of the operation of the stirring devices;

Fig. 9 is a sectional v1ew taken on tlc line y,

Figi 10 is a view taken onV the line 10-10 of Fig. 7;;v

Fig. llfis a fragmentar sectional view taken on the line 11-11 ofig. 6;

Fig. 12 is a fragmentary cross sectional" view taken on the line 12--12of Fi 11;

Fig. 12a is a sectional plan view o a detail shown in Fig. 12; y

Fig. 13 isa sectional view taken on the line 13-13 of Fig. 10; l

Fig. 14 is a vsectional plan view taken on the line 14-14 of Fig.' 13; vy

Fi 15 is a diagrammatical view, illustrating t e yoperation of thestirring devices in the coffee cups;

Fi 16 is a sectional plan view taken on the line 16--16 of Fig. 7; and

fragmentary cross sectional Fig. 17 is a detail' view taken on the. line17-17 of Fig.`7.

Referring to these drawings; the machine includes an upstandingcylindrical tank 15, supported by legis 16 (Fig. 1). Thistank at itslower end by a head 17 suitably secured, as by soldering, to the tank.The interior of tank 15is divided off by vertical partitions 18 and 19and by a horizontal partition .20 to' form a substantially U-shapedwater storage chamber. The

lpartitions 18 and 19 are suitably secured, as by soldering, along theirvertical edges to the peripheral wall of tank 15 (Figs. 6 and 16) andthe partition 20 is similarly secured to the lower horizontal edges ofpartitions 18 and 19 (Fig. 7). Surmounting tank lis a; removable hood 21having a head 22 which closes off the upper end of each vertical leg ofthe water chamber. Communicating with one vertical leg of'thief-chamber, near the upper end ther'edfis a water supply pipe 23:

which is normally lcointrolledfby a valve 24:, v

operated by`a iloat 25 in a manner 'clearly obvious from Fig. 17. Thereis, however,

-preferably'fprovided in pipe 23 a hand valve 26. Tlef admitted by valve24 passes' ber,carries o" the steam therefrom and forms a safeguard toprevent the water rising beyond .the desired level,-s uch level beingnormall controlled, however, by the float operate valve24. A draw oivalve 31. is, 'provided near the lower end of the water chamber.

'Phe water may be heated by any) suitable means. As shown in Fig. 1, agas urner 32 is provided below the base of tank 15, 'and connected 'by apipe 33 to the gas supply. Interposed in this pipe isa valve, shownconventionally at 34 in Fig. 6, which is operated by the thermostat 29.This thermostatically l, o rated valve is of a known type audit is gdeemed necessary to describe or illustrate it in detail. Suiice it tosay, that it functions to turn on the gas whenever the water in thewater chamber falls below a predetermined temperature and to shut olfthe gas when such water reaches such temperature.

The gases from the burner are carried olf by a series of iues'which passthrough, or

adjacent to the vertical legs of the water chamber, whereby some of theheat of the gases is utilized to heat the Water. These iues for one sideof the chamber consist of three pipes 35 (Fig. 6) which at their lowerends pass through and-are suitably secured to the lower head 17 of thetank (FiU'. 7). Near their upper ends, they are secured by stays 36(Fig. 6), soldered to the pipes andk to the wall of tank 15 or thepartition 18.v On the other side of the water chamber, a more or lessrec'- tan ular shaped iue 37 is formed by securing to t e outer side ofpartition 19, a metal strip 38. The head 22, above described, hasopenings therein which register with those of the several iues 35 and37, as indicated in F ig. 2 so that through passages from the base tothe top of tank l5 are provided for the escape of gases from the burner.If necessary or desirable a second iue 37', similar to Hue 37, may beprovided by attaching a strip 38 to the partition 18.

4The space between the partitions and above the partition 20 forms acompartment for the reception ofthe coffee making 5g mechanism. Suchspace isv divided off by a vertical plate 40 (Figs. 6 and 7). This plateserves to support substantially all of the mechanism of the machine(Figs. 10, 11 and 12), such asthe coHee cup conveyer, the

l5 coee feeding and measuring device, the hot 18 and 19v waterdispensing ,pipe`s, the coffee cup inverting means, andthe means foroperating the stirrers in the coffee cups, together with drivingmechanism to coordinate the operation of the conveyer, coffee feeder andWater dispensers. Plate 40 is secured by bolts 41 (Figs. 7 and 10 alongeach-side edge to strips 42 (Figs. 6 an 10),.which are secured one tothe flue forming strip l38 on the partition 19 and the other to asimilar strip 38 on the partition 18. The space in back of plate 40 isclosed ofi:l at the bottom by'a pan 43 (Fig. 12), which closel fitsagainst the plate 40, partitions l18 an 19 and tank l5 and'is suitablysecured thereto. By removing the bolts 41 and disconnecting the hotwater supply pipe, later to be described', the plate 40 and allV themechanism carried thereby, maybe removed from tank 15 as one unit.Access to the interior of the tank for the removal of such bolts and forother purposes may be had by opening the hinged door 44 (Fig. l),usually provided with a window 45 through which the operation of themachine may be` observed.

The coffee cup conveyer is located in front of plate 40 (Figs. 6, 7, l0and 12). -It consists of two socket chains46 mounted side by side inaxially spaced relation .on a series of double sprocket wheels 47. Thereare four such sprocket wheels which guide the c hains in a closed .looppath of substan tially rectangularform. The two vertical .removed andspecial pins 53 are substituted therefor. Each such pin passes throughthe side plates and roll of the front chain, across to the rear chainand then through the side plates and roll of the rear chain, with itsend headed over against the rear side plate of the rear chain in theusual way. A flange 54 on each pin 53 abuts the front side plate of thefront chain. A spacing sleeve 55 is mountved on each pin 53 and isinterposed between the rear side plate of the frontl chain and the frontside plateof the rear chain. Each pin 53 projects forwardly asubstantial distance from the front chain and near its forward end has agroove 56.

A coffee cup is mounted for convenient removal on each of the pins 53.Each'such cup includes a cylindrical shell 57 (Fig. 3) open at top andbottom. Secured thereto near the upper end thereof is the hub 58 of agear 59, to the rear face of which is fixed a rectanasias i ghn* plate60. This plate, gear and hub are ed out to receive pin 53 and to freelyturn thereon. A pin 61 mounted in hub 58 en ages in the groove 56 of pin53 and isyiel ably -attached hub, 'drawn axially A 57 is screen 62, offrusto-conical shape, se-

f' held thus positioned by a spring 6l (Fig. 5). t outward pull, theshell 57 with late and gear can be withom its pin 53. v Within shell Bya 'sl' cured at its upper end to the upper end of shell 57 and at itslower end to a hub 63, se-

curedb spider arms 64 to shell 57. A plurality o stirrer arms 65 engagethe inner-wall of screen 62. 'They radiate from, and are fixed to, a.common shaft 66 rotatably mounted in hub 63. Below this huband securedto shaft 66 is a wheel having 'four radiating spokes 67 (Fig. 6), ywhich-.are adapted *at suitable points in the travel of the conveyer tobe'engaged and turned to operate the stirrers 65 and loosen the groundycoffee bean contained in the cu -like screens 62.

. vertical stretch ofthe conveyer,'and this is within the scope of .myinvention, the ground coffee bean may perhaps be fed tothe cups at someother point. The feederl comprises a hopper 68 (Fig. 7) which is setinto an opening in the head v22. Interposed in the outlet pipe 69 ofthis hopper (Fig. 13) is a rotatable wheel 70 having a pocket 71 (seealso Fig. 14). This pocket at one point in the revolution of the wheelbecomes filled with ground coffee bean and at another point in itsrevolution discharges' the measured charge into the lower and outlet endof pipe 69, from whence it falls into an vunderlying' screen cup 62. Themeasurin wheel 70 (Fig. 10) is driven by a shaft 72, rotatablymounted'ina hub on plate 40. 'The rear end of this shaft carries a sprocket whichabuts thehub and is driven by mechanism llater to be described. abutmetSuch asa flanged nut 93, against -Which the upper end of spr-ing 92bears. Screws 95,V passing loosely through the flange Fixed to the'frontend of Shaft 72 is a, sleeve 73, which also abuts said hub andwith the s rocket holdsl shaft 72 against axial disp acement. 72 (Fig.14) far enough to receive the shaft 74 of themeasuring wheel.` Shaft 74has a radially projecting pin 75 and sleeve 7 3 has a Abayonet slot 76(Fig, 10) whereby the shafts 72 and 74 are coupled in a ina-nner to u.permit convenient detachment when .the

feeding and measuring wheelisv to' be removed. To remove this wheel itis simply necessary to turn it slightly by. means of the knurled knob 74and then to pull-axially out- Awards on the knob, whereby the wheel, its

Awhich extends rsttoward 1the Where, as is v Sleeve 73 extends beyondshaftl shaft and the .75v thereof Ama be withdrawn '.f-rom'casing 69.*

, rovisions are made-for' discharging 4hot water into the cups attwogpjoints in their-- travel, although 'in some casesfitfwill suicetofhave the hot water `dischargeat onlyone point. Dispensing spouts 77and 78A (Fig). 7

are connected to a common hollow hu on pla te 40 and their. outlets areso disposed as to discharge hot Water into the uppermost cupv of bothvertical stretches of the conveyor (see also Figs. l10 and 12).* Fromsuch cups,

the water asses downwardlyand successivelyv throng all theunderlying'cups of each vertical series. Hot water is 'supplied to thehollow hub 79 b piping 80 (Fi. 6 andf12) tank 15, thencedownwardly andthence forwardly, being connected tothe left hand vertical leg of thehot water storage chamber at a point about half way down.. Byso doing,an even low of hot water is securedy because the water, at the levelfrom which it is taken, is' free from ebullition. Piping. 80 includes aunion 81 (Fig. 12) which permits .the hot water sup ly connection to beconveniently broken w en it is desired to.

remove plate 40. The dispensing spouts and the highest point in pipingv8O are, of. course, located at a level below that of the water in thestorage chamber. Such piping also includes a valve 82 (Figs. 11 and 12),of thetype having a sliding plunger 83. When this plunger is in theillustrated position, valve 82' is closed and when lowered, the valvewill open and allow hot Water to iow Afrom both of the dispensing spoutsinto the underlying cups. Y

The valve plunger 83 isoperated intermittently by a crank 85 mountedtoturn on a stud 86, fixed to plate 40. Crank 85 is con-- nected by alink 87 to a rod 88, mounted to lslide vertically in bearings 89-and89,l fixed to plate 40.- The construction 'of bearing 89- will bestbeunderstood from Fig. 12a. Rod

88 has fixed thereon a fork 99 which straddles the plunger 83. Restingon fork 90 and slidable on plunger v83is a seat 91 for a spring 92.Fixedfto plunger 84 is an adjustable of nut 93, are threaded at theirlower ends into seat 91 and serve to limit the extent of expansion ofspring 92. When rod 88 'is in its uppermost position vas shown, spring92 is compressed to some degree,whereby the ck wall of valve 82 is heldtightly closed. This spring 4 also enables rod 88 to travel to lsomedegree, after it has eiiected the closing of the valve, and therebyavoids the necessity for close adjustment of the stroke of rod 88to thestroke of plunger 83, which would otherwise be required. For similarreasons, the lowering movement of plunger 83 is effected through theintermediary of a spring 96, which acts between an adjustable abutment97 on the plunger and a spring seat 98 and which is adapted to beengaged by the lower face of fork 90.

Referring now to thedriving mechanism, this is all located on the backside of plate 40, as shown in Figs. 10, 11, 12 and 13z The power source`is conveniently an electric motor 99, which ismounted on a shelf 100,secured as indicated to plate 40. -Motor 99 drives by a belt 101, ashaft 102, mounted in a gear casing 103, which is secured to a bracket104 fixedV on the rear face of p late 40. Within casing 103 and fixed toshaft 102 is a worm 105 which drives a worm gear 106, fixed to a shaft107. The latter extends rearwardly out of casing 103i and has a bearingin plate 40, as shown in Fig. 10. Fixed to shaft 107, between theplateland casing, is a gear 108 which drives a gear 109, mounted to turnon 'a stud 110 fixed in plate 40. Fixed to gear 109 is a cam 111 which,except for a single recess 112, is a cylindrical surface. Also fixed togear 109 is an intermittent gear 113 which, as best shown in Fig.. 13,drives three pinions .115, 116 and 117. The

. pinion 115 is fixed to the driving shaft 49 which operates the coffeecup conveyer. The

pinion' 116 is fixed to the crank 85 which operates the plunger 83 ofthe hot water sup- 'ply valve 82. The pinion 117 is fixed to a sprocket118 and both are mounted to turn on a stud 119 fixed in plate 40.Sprocket 118 is connected by a chain 120 to the sprocket on shaft 72,which operates the measuring wheel 7 0.-

The vdriving gear 113, turning in the dlrection of the arrow shown inFig. 13, is so con- .structed as to effect during each complete rotationthe-following operations. First, pinion 117 is turned through onecomplete revolution and then comes to rest, whereby a measured charge ofground coffee bean is delivered into the uppermost cup 62 on the righthand vertical stretch of the conveyer. As

. soon as pinion 117 comes to rest, pinion 115 is started in motion andis turned one half revolution to advance the coffee cup conveyer onestep. Pinion 115 then comes to rest and pinion 116 is turned onecomplete revolution,

. thereby effecting an opening and then a closing of valve 82, wherebyhot water is discharged into the cups of each vertical stretch of theconveyer.

The made coffee is received, and stored when necessary, in a drawer 121which is located just above the horizontal leg of the water storagechamber and is mounted to slide into and out of the tank 15, when door44 is opened. This drawer is subdivided by a partition 122 into a largecompartment 123 and into a small compartment 124. `The partmarked 125 isnot a partition, as might appear from Fig. 16, but is merely a bracewhich connects the partition 122 to one side wall of the drawer. of thevdrawer as will be clear from Fig. 7. Draw o'f faucets 126 and127,1'nounted on the front and outside wall of the drawer, communicaterespectively, with the small and large compartments. In addition, avalve 128 (Fig. 16) is provided which when opened permits communicationbetween the two comartments. This valve 128 can be operated rom outsidethe apparatus by alhandle 129. All that I wardly o plate 40, is coveredby a pan 130. This pan rests uponfour lugs 131 fixed to the Side wallsof drawer 121 and the rear lugs project u in back of an 130 to preventit from sli ing'rearwar ly.y Pan. 130 has an opening therein whichoverlies the small It does not extend to the bottom part of drawer 121which lies forcompartment 124 and in' this opening is mounted arectangular lframe 132 `which supports a screen 133. Resting on angles134 secured to the side walls of pan 130 is a screen l135which coversthe entire area of the an. It will be seen that all coffee dripping romthe cups 62 will pass through screen 135 that some may pass directlyinto the small compartment 124; and that none can pass directly into thelarge compartment because of the pan 130, which diverte the coffee intothe small compartment. That -part of the drawer lying tothe rear ofplate 40 is protected from any foreign matter' falling therein from theoverlying mechanism by the pan 43 which, as above described, extendsacross from the lower edge of plate 40 to the rear well as thepartitions 18 and 19.

The motor 99, and thus the operation of the entire coffee makingmechanism, is controlledautomatically according to the level .of madecoiiee in compartment 124. The

rear end of such compartmentcontains a oat 137, having an upstandinghollow stem 138, which slides on an upright guide pin 139 secured to thebottom wall of drawer 121. Slidahly mounted in several guides 140 fixed10o wall of the tank and closely fits the same as to the rear wall ofplate 40 is a rod 141 vand adjustabl fixed thereto near the lower endthereo is a member 142, the lower part of which overlies and is adaptedto be engaged by the plunger 138 (Figs. 7 and 12). Rod 141 is adapted tooperate a switch in the circuit to motor 99. This switch consists of athereof, thereby connecting the terminals 148 and starting the motor.

It is essential that the. --motor should not(- :maar:

be stopped while the het water suppl valve switch. The motor 99 can vlink-155 vand part o 82 is'open. To that end a roll 149 is ed to rod 141and so located that it4 will engage the periphe of cam 111 when the rodrises, or elseride lnto the cam recess112. If-thecam happens to 'be' sopositioned when rod 141 rises, that'roll 149 can ride into the camrecess112, then the rod can rise far eno h4 to 5 move the mercury switch to 0Eposition.

Otherwise, roll 149 will strike the smooth lcylindrical part of cam 111andfurther rismg movement of .rod 144, such as is necessary in order too rate the switch, .will be prevented until e driving mechanism comes to'the desired position in its cycle (being that shown in Fig. 13) whenrecess 112 allows the rod'141 to rise farenough to ogm the mercury us bestopped onl whenthe parts are positioned as shown in ig. 13. As thereshown, 4the coiee cup con'veyer is at rest the hot -water valve 82 isclosed and the'feedinfg1 and measuring wheel g2.' is in'position to beled with ground coii'ee 1L Y It is also desirable to stop' the operationof the machine when the supply of ground.

coee bean in hopper 68 is exhausted. To this end, a llap valve 150 (Fig.13) 4is mounted in the outlet 69 of the hopper above the measuringwheel. This valve is fixed to a .shaft 151'mounted to turn in the wallsof outlet 69. Shaft 151 is cou led by a sleeve 152 (Fig. to an alned saft 153, which is mounted in plate and onf i'ts rearend carries a lever154. The sleevecon'nection permits convenient disconnetionof the shafts151 and 153 and allows thehopper to be removed. It is provided for thesame reason as the bayonet oint connection between shafts 74'and 72. ver154 isconnected by a link 155 to alever 156.` The latter is pivoted toplate 40 and has a forked end vto straddle the float-operated rod 141,such end underlying acollar 157 on the rod. Normally the weight of thecoil'ee will hold valve 150`open asshown, but when tinct purposes.First, they are operated during the cofee making operation at somesuitab e point in the cycle ol travel of the cups, as for example-aftertheyt'xiiave complete'ditheir Fdownward travelandl fore they start'their upward travel. Second, the stirrers are A again operated whiletheir cups are inverted in order 4to loosen thecoiee grounds andfacilitate the emptying ofthe cui.v

For" the first operation of t e stirrers, as the cups successively passalong theirlower horizontal path, one of the spokes of the wheel 67engages a stationary arm 160 (Figs. 7 8 and 10) which projects outwardlyfrom a bracket-161 secured to plate 40 near .the central bottom partthereof. This same bracket has.' formed thereon a short track 162,against which the upper side of the rear cham 46 bears; and a similartrack` 163, a which the under-face of the front c in bears.j Thesetracks, by thus engaging the chains, serve to maintaln the spindles 53on which the cu s are turnably mounted, in horizontal position, wherebythe Vaxis of eacll;v cu ils1 nliai'iitlgined vertllcal and the s o es ow ee e t roper sitioned fgr engagement with gral; 160. igcket 161 alsocarries another track 164, along which the plates 60 of the coEee cups`successively slide. '111e engagement of each plate 60 with track 164prevents its cup from rotating on its -supporting spindle' during thetime that the spo ed wheel is being turned by arm 160. The-latter isarranged to effect a quarter turn of the stirrers.

In order to avoid tilting of the coiee cups 62'durin their two coursesof vertical travel,

lthe supply of coffee runs lois'l 'the valve -vilill` turn into itsupper horizontal course of travel,

rise, due to the weight of the lever 154 and the lweight of lever '156,thereby raising rod 141 and tilting .themer- 'i cury switch .to olfposition. This arrangement,it will be noted, in no Away interferes withthe freedom of rod 141 to rise under the action of ilo'at 137.

For the purpose of cooling the motor, several openings .158 are providedin the rear `wall of tank 15'just above shelf 100 andthe cover 22 has anopening 1,59 (Fig. 2) overly ing the motor." When the 'motor becomeswarm a thermo-siphonic circulationof air is induced for` coohng themotor. Such air enters the openings 158, passes along shelf toward platey40 and then rises, escaping through opening 159 .incover 22.

The several stirrers 65 are intermittently operated attwo'diiierenttimes for two disfgis. turned through one complete revolution during thelast named course of travel. y This is eiectedby a rack 167 whichengages and turns thepinion 59 on the cup, as will be clear' from Fig. 7Thisrack is carried by a bracket 168 xed to plate'4Q (see also Fig. 10)Bracket 168 falso carries a track 169, against which the under side ofthe front chain 46 is engaged. A separate bracket 170, ixedto plate 40,carries a track'171.t o engage the upper face of the rear chain 46. iThese tracks 169 and 171 steady the'chains and line up and yhold thespindles 53 of the coffee cups in proper posltion so that the pinions59will be properly"engaged with rack 167. The cups 62 are turning duringall of their horizontal travel. As each cup is swung upwardly, one `ofthe spokes of its wheel 67 is engaged by an arm 172,v fixed to plate 40.The wheel 67 (see Fig.. 6) will bey turned approximately through onequarter of a revolution by arm 172bj'y7 the time the cup4 62,reaches the.illustrated position--and becomes. fully inverted.

Thus, the scrapers 6.5, of 'which there arejiiiiir will have moved overlthe entire surface cup 62 and loosened the groundstherefrom.

The grounds fall fxiorrrthe cup-imo the,l open,

upper end) of an underlying .receptacle 173. As'the cup continuestotravel, another spoke of wheel 67 will be engagedby another yarm n174, also iixed to plate 40. Arm174 will'cause v venient removal inanysuitable manner. As"

starts and stops the.

Wheel'67 and scrapers`65 to be turned another" quarterfrevolution andthis occurs while the 24 closes. The float 25 operates this valve and 'Yautomatically maintains {the water at the desired level. The wateringthe'storage chamber is heated by gas burner 32 and kept within closelimits at the desired temperature' through the action of thethermostatically controlled Avalve 34 :which automatically burneraccording to reuirements. Itis tobe noted that the storage c ambersurroundsthestorage drawer: 121 on three sides and the'hot water'in suchchamber assists in keeping the made coffee in the drawerfhot. Thefiues37 'and 37 alsoassist in the action just described by keeping warm thechamber which is located above the storage drawer' andin which thevcoffeev maklng mechanism is housed. After the water is heated vby itstravel throughthe U-shaped storage chamber, and principally as it passesover the burner 32, it is fed from the chamber whenever required,through piping 80-under theautomatic control of valve 82, and into thedispensing spouts 77 and 78. From these spouts, hot water is dischargedinto both the left hand and the right hand vertical series of cups onconveyer 46.

As the hot water passes through each cup 62 and drips into theunderlying cup, it leaches the ground coii'ee bean and gradually becomesstronger and stronger coffee until it iinally passes through the bottomcup of the vert1cal' series and into the storage drawer' 121 as madecoffee. From the drawer, hot

ycoiiee `may be drawn, as needed, through the faucets 126 or 127. v

'It will be apparent that, if hot water is kept running (with onlynecessary interruptions as will'ap'pear) through'cups 62 and the supplyof groundv coiiee in the cups is renewed often enough, there will be acontinuvintermittent manner.

ons nuthin4 .of coEee. The machine .is so del signed as y having aseries of cups `move both-against and with fallin streams of hot waterto make cotl'ee in a su stantially continuous manner, whenever desired,or 1n. a`n

One preferred ar-v rangementA for the machinewould be to have `:thewhole quantity of coffee made in a continuous'operation over a giventime equal the amount of coffee that would run out of the `faucetf126(or when a. larger capacityis required both faucets 126 and 127) while`wide w `open, or an equal time.. Insuchv case, no

made coffee wouldbe stored in the machine while in full operation. Thispossibilitywill l emphasize the general goal to which the operation ofthe machine is approximated and the various features of invention arerelated :for adlustment to meet practical conditions leading to suchpossibility.v

y The operation of the coiee makin mechanism is controlled according tothe emand, as manifested by the. frequency and the amount of withdrawalsof coffee from stor- "lage drawer 121. Whenever the sup 1y, of storedcoii'ee .runs low, float 137 y wfil fall and with it rod 141 and thelatter, in falling,

will tip the mercury switch 144 and cause -motor 9.9 to'be started inoperation. The

coiiee making mechanism will thus be set `in'operation and it willthereafter vcontinue through successive cycles of operation until thesupply of made .coii'ee in drawer 121 is 'eplenished The float 137 thenIrises and l ts rod 141 and. the mechanism will be stopped,lwhen itreaches the end of its cycle of operations. It will not be stopped atany other point in such cycle because the rising movement of rod 141-will bearrested b the engagement of roll 149 with the cylinciical partof cam 111 and ,it is only when this cam arrives at .the illustratedposition thatrod 141 can rise far'enough'to tip the switch 144 i to oil'ositiom Eac cycle of o eration of thecoiee mak ing mechanism e ects thefollowing, results. First, the control gear 113 will turn gear 117through one complete revolution while the coffee cup conveyer is at restand the water valve 82 is closed. This will turn the feeding andmeasuring wheel 70 through one revolution from the position illustratedin Fig. 13. Thus, the pocket 71 which has been previously filled withground coiee bean from hopper 68, will be turned so as to dischargethemeasured charge into the underlyinff cup 62 -being the uppermost cupof the tiight hahd vertical series. The wheel 70 will then return to itsillustrated position and come to rest.` Its pocket 71 will then be-tilled with ground coil'ee bean from the hopper. Secondthevcontrol ear'113 will turn gear 115 through one. ha i revolution and lthus advancethe chains 46 of the coffee cup conveyer. Incidental to the movement ofthe 'conveyer, the-stirrers 65 in'one of the Tcupsl62, are o rated bythearm 160 to stir up the groun coffee bean in the cup, while in motionand 'at an .intermediate point 1n its travel between fillinganddischarge position.A` Also, lanother .cup will be inverted as itmoves into overlyin relation wlth rece tacle 173 by means of t e rack167, which e ects one revolution 4of the-gear 59 on the 1,; cup. Duringthis inversion of vthe cup, the

stirrers 65 areoperated, first by the arm 172 and then by arm 174, toloosen the grounds in the cup and' assist in securnga complete emptyingofthe cup. y Third, after the cof- `l5 fee cup conveyers'comes to rest,the control` gear 113 will impart one complete revolution to gear 116and thus to crank '85, whereby rod 88 is reciprocatedtolirst open andthen close the water vvalve 82. This results 1n measured char es of hotwater issuing from spouts 77 and S and thus into the cu s on bothvertical stretches .of conveyer 46. ince the level of water in thestorage chamber is maintained substantially at a. constant level and thetime during which valve 82 Ais open is a constant,it followsthat theamountof `water delivered fromspouts 77 and 78 w11l 4be constant at eachoperation of the machine. The quantity of water admitted may be variedby varying the time, in the cycle of operation of crank 85, during whichvthe valve 8 2 is open. The arm 90 is' adjustably secured to rod 88Ytoenable such time to be varied, and theabutments 93 and' 97 areVadjustable on the rod -and their position can be varied, if. necessary,to secure the desired result.

It is thought important that water' be admitted to the' cups of bothvertical series, although the invention is not limited thereto l' 3 andhas been practiced in a form where onlyone vertical series of cups isused for making l coffee. For theY desired result, a certain amount ofhot Water must pass through a certain amount of ground colee bean 1n ainvention, half this amount is delivered to, th'e cups '62 at .one pointin the travel of the con'veyer 46 and the other half to the c ups i atanother point in such travel. By so doing,

a smallercharge of water is fed atan one time to the cups and thereisless likelihood of the cups flooding over than when the to'. tal chargeof water is delivered at one time to one cup. Also, the arrangementadmits 3 of amore efficient utilization of the conveyer, e'ach of thefourstretches of which is utilized for some necessary purpose and thelarger part ofthe travel of which is utilized for the making Vof coffee,with only such necessaryinterruptionsV as occur for the stirring of theground coffee bean and the emptying of the spent grounds. y 1 v From thefore oin description, it will vbe clear that coffee 1s e ectively andautomatically made according to the demand, as mani.-

fasted by l"vvithdrawals from drawer 121. However, the mechanism doesnot op,l .A erate 'every time a cupv offA coffee. is' drawn from themachine through valve126 because -a Asmall quantity is stored in the comartment 124 and the float-137 must fall ade ite distance before themechanism is started. A.

In order to vary the -quantity of coffee stored in drawer 121, the smalland large compartments 124 and 123, respectively, have been provided.When the demand for coffee is large, 'valve 128 Ais opened to connectthe two compartments Iand increase the storage space.' When the largerstorage spacel is used to meet aheavier demand, two service 'faucets 126and 127 f are available, where only one,-`the'faucet 126,-"was availablekfor thel lighter demand when compartment 124 alone was -used to storethe coffee.

With this arrangement, a most satisfactory balance between c'ofl'eesupply and demand and storage capacity may be attained.'

During dull periods of the day, as'between rush hours in a restaurant,thevsmall compartment 124 andv its faucet 126 alone are used and, sincelittle coffee is then demanded,

that little is normally freshly made because of the small storagecapacity. During rush hours, both storageicompa'rtments are used andboth faucets ma beusedand the mechanism will naturally workingoftenenough to keep the coee freshly made. All the attendant needs to doisto see that the machine is supplied often enough vwith fresh groundcolee bean in hopper 68 and that receptacle 173- isemptied whenrequired. Should the supply in hopper 68 become exhausted, the switch144 will be heldin open 'position by the rising movement of liep valve150 and the mechanism cannot be operated until the coffee supplyisreplenished.l f

One of the features of the machine is the arrangement bywhich allof thecoffee making Vmechanism `is carried on plate 40 for given time.1 In thepreferred form :ofthe l.insertion into, or removal from, the tank 15 yasa unit. By taking off the coverv 21, disconnectingl union381 andremoving the six cap screws 41' (through the opening available when door44 is opened), this platevwith alll moving parts ofthe machine inassembled relation thereon, may be liftedvertically out of the machine.Access for disconnection of union 81 may be had by way of a door in theback of the casing, which door is indicated in part at 178'i'n Fig. 10.The measurf ing wheel 70 should be removedl prior to re- -zmoval ofplate 40, and shafts 151 and -153 should'be disconnected'at lsleeve 152.The hopper 68 and-casing 69 will then be removed with cover 21, .Whilethe shafts 72 and 153 remain with plate 40. `Float 25l and its valveseldom need attention but they are readily lus4 accessiblewhen cover 21,is removed. Itis of considerable manufacturing advantageto be able toassemble all parts of the coee mechav the tank.

the plate 40, with all the mechanism thereon nism outsidetliedlimitedconfines-of tank 1,5.

The entirefm'echanis'm maybe assembled and adjusted and then inserted asone lunit in So also, if servicingl is required,

may be quicklyl removed and.- another unit substituted,. after whichtheremoved -unit may be taken 'to'a Shop Where itfinay conthen `be open,an

veniently be put in order,l The ready removability of the storage drawer121 enables it to be easily, quickly and thoroughly cleaned withoutdisturbing the mechanism of the ma"chine,--av most important featurewhere 'containers of liquid cof` fee are concerned. In removing drawer,it is desirable to shut off the electrical supply because rod 141will'dropto switch clos!v ing position, when unsupported by oat 137.When reinserting the drawer,` it 1s advisable to reach in throu h door44, whichwould raise rod 141 while the fioat stem 138 is slidinto place.

The coffee making machine, with thefeatures described, is particularlyuseful in public. eating places.` The invention is pointed out in theappended claims whichare intended 'to cover the various features indifferent combinations as comprehensivelyas the state of the prior artmakespossible.

What I claim is: i N I 1. In a coffee making apparatus or the like,

mechanism toljilnakecoffee comprising a conveyer,'a. seriesofpo'rouscupsspaced on the conveyervand hung to .normally remain up-vright, means tostir the contents .of said cups,

means to feed ground coffee bean to the cups, means to turn the cupsforgeinptying the coffee grounds, means to` drop -liot Waterthrough onecup to another, and means to operate said stirring means to loosen theco'ee bean in thecups. 'i i 2. In a coee making apparatus or the like,mechanism to make coffee comprisingia conveyer havingtwo verticalHigh-ts', a series of porous cups onfsaid conveyer, each; pivoted f .tonormally remaiiiiipright, meanstodrop hot' water through one -cuptoanother inone vertical Hight ofthe conveyor', means towfeedV groundcofl'ee bean to said cups .before and to empty spent grounds therefromafter the cups pass through said vertical fiightof'the conveyer, and-means to loosen the `coffee Vgrounds or bean while in said cups.

3. In a cofi'ee making apparatus or the like, mechanism to make. concecomprising a. conveyer, a series of porous cups pivoted to hang uprighton said conveyer, a stirrer in cach .cup with an operable'extensionmeans to turn the same, means to ldrop hot Water through one cuptoanother in said fiight, means to feed ground coffee bean to said cups,means to empty spent grounds -froin said cups, means to operate saidextension means as the cup is being emptied, and means to operate saidextension means as each cup reaches a a'iid emptyin points.

pointzin its ami intermediate 'the fearing 4. In a co ee makingapparatusy or thelike,

mechanism'to make coffee comprising a conveyer arranged-1n a verticalloop, a. series of porous cups spaced on the conveyer, a measuringdevice for ground coffee bean,.a container -for spent grounds, and a hotWatery feeding hot water in an upper cup,and means to stir the materialinsaid cups to assist the water to drop therethrough.

6. A coffee making machine, comprising a U--shaped tank for a hot Watersupply, means to heat the water at the horizontal-portion of thetank-,water inlet and` outlet in opposite legs of ithe tank, andmechanism for making coffee located between the legsv of ,the tank.

7. In a coffee-making apparatus, a main tank having inner Walls spacedfrom'the outer walls and the bottom wall to carry a hot water supply,coffee, making power mechanismlocated between the inner walls, a.

made coffee receptacle, just above the inner bottom wall, andmeanscontrolled bythe liquid level in said receptacle to startl and'stop said power mechanism.

f8. Inv a .coffee making apparatus, a main tank'having inner. Wallsspaced from the Router walls and the bottom wall to carry a 4hot watersupply, coffee making mechanism locatedbetween the -inner walls, a madecoff Vfee receptacle just above the inner bottom wall, means controlledby the liquid level in said receptacle to start'and stop said makingmechanism, and means operable by` said mechanism tofeed hot water andcoffee beans vin quantities kmeasured in proportion to the v'timesaidmechanism is in. operation.

9. A coffee making apparatus, comprising,y

a tanky divided into compartments, one for the hot Water supply, one forcoffee making mechanism, and one for thc made coffee situated belowthat'for said/mechanism, said tank having a'n opening for the insertionand removal of said mechanism fromthe top and an opening in the side forthe insertion and removal of a container forming the wallso-f the madecoffee compartment. i

10. In a coffee making apparatus, a -tank divided into compartmentsforthe `storage of hot water andfor the reception of operating mechanism, aframe adapted to be inserted into and removed from one of said theliquid level in said rece tacle to Stop and 210m artments; mechanism onsaid frame inu quantities of 'ground coffee bean, a series of'receptacles having rous bottoms to suceeiv'ely receive said quantitiesof coffee, means to move said receptacles through a closed cycle ofmovements including avertical path, means to release measured quanti- 10ties of hot water from said storage compartvertical path, and means toempty each receptacle of coffee grounds. after it moves away from saidvertical path; said. frame and mechanism being insertable into andremovable -rom its compartment as a unit, f a made coffee receptacleunder said vertical path, and means to withdraw coffee ,from saidreceptacle.

11. In a coffee making apparatus, a tank divided into compartment-s forthe storage of hot water and for the reception ofoperating mechanism, aframe adapted to be inserted and removed from one of said compartments;mechanism on said framel inquantities of ground coffee bean, a series ofreceptacles having orous bottoms to successively receive said quantitiesof coffee, means to move said receptacles through a closed cycle ofmovements including a vertical path, means to release measuredquantilties of .hot water from said storage compartment at a point aboveand in line with said vertical path, and means to empty each receptacleof coffee `grounds after 'it moves away .from said vertical path; saidframe and mechanism being insertable into and removable vfrom itscompartment as a unit, a'made coffee receptacle under said verticalpath, a float controlled means operable by start said mechanism, anmeans to withdraw coffee from said receptacle.

12. An automatic coffee making machine, comprisin a tank, partitionwalls in the tank to orm a U-shaped water storage "chamber, and a dryspace between the legs of such storage chamber to receive the mechanismof the machine, an inlet to the storage an outlet from the chamber inthe other leg, means for heating the water at the bottom of the storagechamber, and mechanism within said dry space operable to makecofchamber, `said mechanism having means lto control the feed of waterfrom the storage space to the mechanism in direct proportion to theoperation of the latter.

13. A coffee making apparatus, including mechanism to make the coffee,comprising, an endless conveyer with a long vertical fiight, open endedreceptacles with sieve bottoms hung in spaced relation on the conve gmeans to intermittently measure.

mentpat a point above and in line with said" cluding means tointermittently measure chamber near the top of one of its legs and feeas water :is fed to it from the storage.

er so as to normally stand upright th-roug out. their travel,- a storagecontainer for ground coffee arranged for each receptacle to beneath it,a measuring means for sai v container, a stora c means for spent coffeegrounds arrange for each rece tacle to pass over its'open end, meansopera le lto empty each receptacle as it passes the storage means, a-water feeding device operable to feed water' to a top receptacle in`line with the vertical flight of the 4conveyer; a geartrailrconstructed todrive and time in a fixed sequence the conveyer, thecoffee meas- I uring means, the water feedingmeans, and the receptacleemptying means;. a motor' to drive said gear train, and means to startVand stop said motor in accordance with the amount of made coffee in saidapparatus.

14. A coffee making apparatus, including mechanism to make the coffee,comprising, an endless conveyer with a long vertical fiight, open. endedreceptacles with sieve bottoms'hung in spaced relation on the conveyerso as to normally stand upright throughout their travel, a storagecontainer for ground` coffee, a measuring means for said containerarranged to successively supplyi said receptacles, a storage means forspent coffee grounds arranged for each receptacleto discharge the-rein',means operable to empty each receptacle as it passes the storage means,a water feeding device operable to feed water to a top receptacle inline with the vertical flight of the conveyer; and a gear trainconstructed to drive and time in a fixed sequence the conveyer, thecoffee measurin means, the water feeding means, and t e receptacleemptying means.

In `a coffee making apparatus, a tank dlvided into compartments for thestorage of hot water and for the reception of operating mechanism, aframe adapted to be inserted and removed from one of said compartments,mechanism on said frame to intermittently measure quantities of groundquantities of coffee, vmeans to'move said receptacles through a closedcycle of movements including a vertical path," means to release measuredquantities of hot Water from saidstorage compartment at a' point aboveand Vinline with said vertical path, and means to empty each receptacleof coffee grounds after it moves away from said vertical path, saidframe and mechanism being insertable into and removable from itscompartment as a unit. n

16. In a coffee making-apparatus, a main,v tank having inner wallsspaced from the outer walls and the bottom wall to carry a hot watersupply, coffee making power mechanism located between the inner walls, amade coffee receptacle just above the-inner Wall, means controlled bythe liquid level in said receptacle .t start andstop said mechanism,-and means operable by said power meehamsm to feed ,hot water and coeebeans in .quantitles measuredy in proportion to thetime saidmechanism'is in operation. y 1

.17.111 a coffee making` apparatus, a tank forpstoring hot water andmade coffee and 'providedwith a dry compartment for mech- .anism, andautomatic coffee making'mechaministri Within thedry compartment of 'thei tankgsaid mechanism comprising avertical familie,gplate,V a horizontalshelf thereon, a

eartrainon one side ofthe verticalL plate,

nda.,cenffv'feyerV with spaced containers, a round .cofleefeceptaclewith measuring Ht pae'chanisrn,fors-supplying said containers, a

receptacle forreceiving spent coffee from the ,containers all arrangedin cooperative rela- .tion on the .other side of the plate, a motorigzofon, said shelfvlfor, operating the gear train,

lsaid conveyer and measuring means being operablein timed relation bythe gear train,

`and a hot water feeding device also operated bysaid gear` train; saidframe carrying said 251 mechanismA asia unit for insertion in and fremoval fromsaid tank.

418.V ln a coffee making apparatus, a tank having compartments'one forthe hot water,

' one for, the mechanism to makethe coffee,

.compartmentor all compartments. of the.

last. named compartments depending on Whether theirconnection is openedor closed.

19. Acoffee 'making apparatus, comprising, a tank divided intocompartments, one for hot Water storage, one for coffee makingmechanism, and one .for made coffee, means to heat the Water,.automaticmeans to. maintain a constant level of hot water, mechanism to.automatically `make the coffee, a frame for said mechanism bywhich itmay 'be inserted and removed to .and from its compartment as a unitabove the made coffee compartment,

said mechanism having means to control a hot water feed from the storagecompartment as used by the mechanism, and a liquid level control meansin the made coffee compartment -for'startingand stopping said mecha'-nism. A

20. ln an apparatus for. making coffee or the like, a conveyer havingtwo vertical flights, a series of porous supports for ground coffee beanmovable with the conveyer, means for successively placing coffee vbeanon said supports near the start 'of the travel of each in kone of saidflights, means for dropping hot water successively through the supportswhile/movinig. in both said vertical flights to v leach the co e beanthereon, and means for successively removing the coffee bean from thesupports near. the end of the travel of each inthe other ofsaid verticalflights.

`21. Inan apparatus for making coffee or the like, a conveyer having'twoV relatively zontal connecting Hights,` a series of' porous cups onsaid conveyer-,each pivoted to normally remain upright, means to drophot water through one cupto anothergtin both saidv verticalflights,.means to feeds ground coffee beanto said' cups While near thestart of one ofsaid vertical flights, means to stir the bean in saidcups while the latter pass in one of said horizontal flights from thelast named tothe otherv vertical flight, and means i to empty the spentgrounds from each cup while ittravels inthe other horizontal flight.

22. In an apparatus forzmaking co'ee and the like, a conveyer havinglong (and substantially vertical flights and two-relatively short andsubstantially horitwo relatively zontal flights, a series of porous cupson said conveyer each pivoted to normally hang `upright, means to drop,hot water from one cupy to another during the travel of thecups in bothy said vertical flights, means to feed ground coffee bean to each cupnear the start ,of its vertically downward flight, mean-s to stir l thebean in each cup-during its lower horizontal flight, and .means to`empty .the cups during their upperhorizontal travel.`

23. In a-n apparatus for makingcofl'ee and the like, a conveyer havingtwo relatively long and substantially vertical flights and tworelatively short and substantially horizontal flights, a series ofporous cups onsaid conveyer each pivoted to normally hang upright,meansto drop hot water from one -cup to another during the travel of thecups in` -both said vertical flights, means to feed ground coffee beanto cachl l.cup near the start of its vertically downward flight, meansllO to stirj the bean in each cup during its lower horizontal flight,means to empty the cups during their upper horizontal travel, and areceptacle mounted Within the loop ofsaid. conveyer and having anopentop to receive the spent grounds emptied from said cups.

24. In an appartus forinaking coffee or the-like, a conveyer having tworelatively longand substantially vertical flights -aud `two relativelyshort and substantially horizontal connecting flights, a series ofporous cups on-sa1d conveyer, each p1voted to normally remain upright,means to drop hot water through one cup to another in both said verticalflights, means to feed ground coffee bean to said cups While nearthestart of one of said vertical flights,l means to stir vlong andsubstantially vertical flights and two relatively short ,andsubstantially hori-l the bean in said cups While the latter pass in oneof said horizontal iiights from the last named to the other verticalight, means to rotate the cups and empty the spent grounds therefrom asthey pass through the other horizontal flight, and means for preventingpivotal movement lof the cups during their travel through all except thelast named of said flights.

25. In an apparatus for making codec and the like, a conveyor comprisingtwo laterally spaced chains with a series ot spindles interconnectingthem at longitudinally spaced intervals and projecting therebeyond, aseries of porous cups pivotally supported on said spindles, a stirrer ineach cup with an operable extension means to turn the same, means tooperate each extension as its cup passes through one part of the travelof said conveyor, and means engageable with the chains of said conveyor'durin said part of its travel to hold them in a xed path and aligntheispindle of each cup so that its eX- tension means will properlyengage said turningmeans.

2G. In an apparatus for making codec and the like, a conveyer comprisingtwo laterally spaced chains with a series of spindles interconnectingthem at longitudinally spaced intervals each or said spindles extendingbetween the chains and having a portion projecting beyond one of thechains, a series of porous cups pivotally supported one on each of theprojecting portions of said spindles, a gear lined to each cup, and arack sup- .ported adjacent one part ot the. path or travel of theconveyer in position to successively engage and turn said gears, wherebythe cups are rotated on their spindles and inverted to empty the spentgrounds therefrom.

27. In an apparatus Vfor making codec and the like,l a conveyorcomprising two laterl ally spaced chains with a series of spindlesinterconnecting them at longitudinally spaced intervals, each of saidspindles extending between the chains and having a portion projectingbeyond one of the chains, a series ot' porous cups pivotally supportedone on each of the projecting portions of said spindles, a gear fixed toeach cup, a ra-Gfk supported adjacent one part of the path of travel ofthe conveyer in position to successively engage and turn said gears,whereby the cups are rotated on their spindles and' inverted to emptythe spent grounds therefrom, and means engageable with said chainsduring said part of the travel to successively line up each gear forproper engagement with said rack. Y

28. A coffee making apparatus, comprising, a tank divided intocompartments, one` for hot water storage, one for coffee makingmechanism, and one :for made coifee, automatic means to heat the waterand maintain moans to control a hot water feed from thestoragccompartment as used by the mechanism, and -a liquid level control meansin the made coiiee compartment for starting-and stopping said mechanism.v

29. In a codec making apparatus, a tank 'divided into compartments forthe storage of hot water and for the recept-ion of operating mechanism,a frame adapted to be inserted into or removed from one of saidcornpartments, a cover for the tank supporting a hopper for ground coieebean, said hopper including a measuring wheel removably mountedtherein,a drive shaft mounted in said rame'and having a detachable connectionwith the measuring wheel, whereby by a turn of said wheel and an axialpull thereon it may be detached from said shaft and Withdrawn from saidhopper..

30. A coilee making apparatus, comprising a U-shapcd tank for a hotwater supply, a burner below the horizontal portion of the tank, Waterinlet and outlet connections to the tank, lues passing through thevertical legs or the tank to conduct the gases away from said burner,and codec making mechanism located between said legs oi.Y the tank. 3l.In a coffee making apparatus, a main tank having inner Walls spaced fromthe outer walls and the bottom wall to carry a hot water supply, coffeemaking power mechanism located between the inner walls, a made codecreceptaclejust above the inner bottom wall, and means controlled by theliquid level in said receptacle to start andl stop said power mechanism,said mechanism including a hopper for the coee bean and measuring meansto feed the bean, and means operable when the supply of bean in saidhopper falls low to stop the operation of saidV power mechanism.

32. In a coiliee making apparatus, a main tank having inner walls spacedfrom the outer walls and the bottom wall to carry a hot `water supply,coffee making power mecha- In testimony whereof I have ailixed myAsignature.

ALNZO LINTON BAUSMAN,

